The Machines That Built America: Alexander Graham Bell’s Revolutionary Invention (S1) | History

Transcript

ah watson it's finished i take it yes sir and here alexander graham bell is granted his telephone patent in 1876 but he still needs to create a working prototype and he feels the pressure to work fast but after a long year of trial and error trying to transmit his voice this connection is not working bell begins to lose hope watson come here i want... Read More